US2649251A

US2649251A - Winding machine

Info

Publication number: US2649251A
Authority: US
Inventors: Carl H Nordell
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-02-26
Filing date: 1947-02-26
Publication date: 1953-08-18
Anticipated expiration: 1970-08-18
Also published as: GB650619A

Description

Aug. 18, 1953 c. H. NORDELL 2,649,251

WINDING MACHINE Filed Feb. ze, 1947 s sheets-sheet 1 Aug. 18, 1953 c. H. NORDELL 2,649,251

WINDING MACHINE Filed Feb, ze, 1947 s sheets-sheet 2 jme/2257v Aug; 18, 1953 c. H. NORDELL 2,649,251

WINDING MACHINE Filed Feb. 2e, 1947 3 sheets-sheet 5 Patented Aug, 18, 1953 WINDING MACHINE? Grl':HINOrdell,f,Pa/lm Springs; Calif:A

wound fis controlled by@meansfoiaf-:fi'ctionr:wheet 201- around"= which the: cordf is' 'pulledf andi' af-L braken' drum; mounted-Ton `the sameshaftiasitheefrictiorrr wheel,' around` whichy afew l`turns of cable@ aref.` wrapped; Weights orra tensionrspringsrappiiedito:s oney endof th'e fcablelexertithefrequiredfrictionagl force orr theA brake drum; Manual meansfarepros I vided'for adjustingfthe' tensionfonthetcordibeingt wound... After the@tension?:hasF.beeminitiallyfasiy justecL it?isfkeptiuniirrnbyrtli'efweightsrcrten A sion spring' which :are ad-j ustedautomatically"bye n 0 any variationt inf;thea;frictiomfactorfbetween:thee brakedrumrand the cables:

The'coresbeingwound is rpreierablfyiina malghe ened' state.` `tofassist inzpreventingsthe fcord'whichf. has :alreadyabeentwound thereon nlaterallyponr- 1 pressed relationship from sliding` battle;'l'.orrrorre` compressedpositiorr.. Thefmeansrforrcrowdfing-or compressing successivex; convolutionsa offss cord ont ther. core; conveniently called. al, crowdrrshce;?.' is 'i provided with .resilient l means-x forfpermittingi thezcrowders shoeftoiamovef; awa-y; from :the curdi beingmoundziri' response to sumfacerirregularitiess in the-core.'l

The .structures ;by,which fthe;variouslfresuttsaree.

attained will be described in connecticutvrit'flfr:their` ,155

the crowder shoef in the:y act r of -compressing the?`r Figa 5 Sis-a .detail perspective viewlofthecrowder:

sh'oe'and associatedfstructure ,and-f showingrthefperiphery of` thef-frictionzwheeL In'athe'.r` drawings, the .referencey numeral I 2` in'- dicates `'auspindle'mounted vtorrotate at controlled?. speeds The spindle-.maybe any cylindricalmem-A ber, and as shown it is afhollow," longitudinalli'rey corrugated. 'metalftubegt provided' with perforations (not'ish'owni, around whichlarcordl 3- iswound'tci4 make a diffuser tube, as described in the afore said zapplicationfl One*` en'd of fthe-icord ris secured to theftubeto be woundf andiithe cord: is their:

pulled aroundlthe .-:tubef from ai. reelq (not showni The cordp'asses" around.` suitable tensioning'. means:l so` that the:

by the. rotation" of the tube;

feeding r movement of the ,cord may be uniformi.

as theftubefisrA rotated.. The .lateral mo-vement :of

base '542.1 is.` regulated` sowthatl-itf is normally:l at a slower rate of speed than the rate at which the.`

crease .ifrther'successive `convolutions .fof J the vcord were: merely vlaidi side byifside. In" other Words, everytime "thertube makes a .completearevoluti'on,

therebytaddingi one convoluticnzof cord to: the woun'di pgortionofthe .-spindIe; .the.ifbed, and its associated'structure; hereinafter described; move*V laterallyta-ldistance somewhat less than the normal diameterxof thefcord."

The-'noord passeszfrom thexreel-r through". anN eye 5:; 5 mounted .onibase lI andtthenaround'a grooved idler 'roll f, a friction wheel. l; and another idlerrollt),J and thento; thettube. The idler rollsare positioned close-to-each other` adjacent the pe-v riphery of the-friction wheel so.that the cord has to-.t travel around, substantially the entire periph'ery'ofwh'eel'lin passingfrom idler roll 6 to idler roll .8. Idlerrolls 6 and 8 are mounted ref.- spectively'on'shafts Sand Ivvhich are supported byarr" L -shapedbracket I I -`secured. to'base 4'.

mad of Erubb'eiror similar rmaterial that will pro- 1videfrictional ContactL without damaging the corda.

Wheel ,.'Iis irrtcunted:ori-:loriev` endfy ofi a -dshaft 1 I 3l. which;extendsflthroughzai bearing I 4 v supported x. Aabrakefdrmnrl 5 .isfmounted .-onx;

by bracket I I.

Eiga-14dearragmentarysectionalliviewrshomnss 55e; thesotherrendiofrshaftl 311, Theebrakefdriumlmay Fig; 6T' is' af: fragmentary" cross"` sectional viewf:

A'fb'ase'ffl isrmounted upon `a. bedor platformi4f` (Fig: 25 f which iis movable transversely:ofrytube 2.:

The peripheryA` of lthe-frictionwheel is groovedT longitudinally i and* the-1 surface of l the groove isknurled;I or otherwise rougher-led,- as. indicated at- I2,i Figure `6.` The-iperipheryof!wheel;'I may liebe made of brass or cast iron, and preferably is made as thin as practicable so that the heat of the braking action can be readily dissipated.

The braking action is accomplished by a few turns of cable I6 around the drum. One end of the cable is secured to a post Il mounted on base 4. An arm I8, supported by bracket il, extends beyond the edge of the bracket and has a shaft I9 mounted therein. Shaft i9 is parallel to shaft i3 and rotatably supports a grooved wheel 20 aligned with brake drum I5. The other end of cable I6 extends around a portion of wheel 20 and is secured to a weight 2l which puts the cable under tension around the brake drum so that the Y brake drum acts as a drag on friction wheel The tension on cable I6 can be adjusted by add- If the friction factor between cable 16 and drum l increases for any reason, the weight rises slightly land automatically causes a slack in the cable until the weight is brought to rest. Conversely, if the friction factor is reduced the weight sinks slightly and tightens the coils, thus increasing their holding power until the weight is brought to rest. Itis desirable to have some slack between drum i5 and post I1 and the cable is secured loosely to the post so that adjustments to provide the desired slack at this end of the cable may be easily made.

The brake structure may be modified, if desired, by substituting a tension spring for the weights 2l and 22.

After cord 3 travels around friction wheel l' and idler roll 8 it is led to tube 2. fore stated, the lateral movement of base 4 and its associated structure is less per revolution of the spindle than the normal diameter of the cord being wound. In order to prevent the cord from piling up on the tube each portion of 'the cord is compressed laterally against the previously wound convolutions on the tube. The mechanism for compressing the cord is shown in detail -in Fig. 5.

An L-shaped bracket 23 is secured to base 4 with its upright member 24 spaced a short distance from tube 2. A blo-ck 25 rigidly secured to one edge of upright 24 has a V-shaped groove 26 facing the opposite edge. A crowder shoe 21, mounted between two vertically spaced pins 2S and 29 projecting laterally from the said oppoo site edge of upright 24, has a similar V-shaped groove 33 facing groove 26. A spreader bar 3i supported on a plurality of pins 32 projecting forwardly from the front of upright 24 has its lateral edges shaped to fit in grooves 23 and 3Q, and this bar serves to prevent the Crowder shoe from moving toward the block 25. A plurality of pins 33, similar to pins 32, are positioned above pins 32 to hold the spreader bar against upward movement.

The crowder shoe structure is assembled on base 4 by securing bracket 23 to the base. Block 25 and pins 28, 29, 32 and 33 have previously been secured to upright 24. Spreader bar 3| is then moved latera-lly between

pins

32 and 33 until one edge is tted into groove 26. Then Crowder-shoe 21 is moved laterally until groove 3) engages the other edge lof spreader bar 3l. At this stage of the assembly a post 34 (Fig. 1) is screwed into base 4 in such a position as to engage the outer edge of crowder shoe 2l and thereby prevent it from moving away from upright 24.

A rod 35 (Fig. 1) projecting rearwardly from As hereinber Crowder shoe 2l passes through an aperture 36 in another L-shaped bracket 3l secured to base 4. A nut 38 limits -the forward movement of the rod and crowder shoe. A spring 39 coiled around rod 35 urges the crowder shoe forwardly so that if it is forced rearwardly by any irregularity in the surface of the tube the spring will move it back to proper position as soon as the irregularity is passed. Although only one crowder shoe is shown in the drawings, a second shoe may be added above or below crowder shoe 2l so that if one is forced away from the tube by any irregularity, the other shoe will always be in operative position.

The front face 4D of the crowder shoe is concave to t around a portion of tube 2 and is positioned adjacent said tube. The edge of the crowder shoe adapted to engage the cord being wound on the spindle is cut away, as indicated at 4i (Figs. 4 and 5), to provide proper contact between the crowder shoe and the cord. The edge 4| engages the cord immediately after it has been wound 0n the spindle, and since the Crowder shoe' has not moved as far to the right, as seen in Fig. l, as the diameter of the cord during the previous revolution of the tube, the cord is compressed laterally to make it t in the space across which the shoe has moved in that time.

The tension on cord 3 prevents it from springing-back after it has been crowded into position on the tube. The tendency of the cord to spring back may be further reduced by roughening the surface of the tube by pressing a piece of coarse ernery paper lightly against the rotating tube before the cord is wound thereon.

The cord wound around the tube to form a diffuser tube may be either a grooved monolament cord or a multistrand cord as described in my hereinabove mentioned copending application. In Fig. 4 a three strand cord is shown in magnified cross-section. The grooves in the monolarnent cord or the grooves between the strands of the multi-strand cord form the pores for the'diffusion and-emission of the air from the interior of the tube. rlhese grooves are helically arranged on the cord and the strand of one convolution of cord cannot mesh into the groove of either adjacent convolution. Therefore, when the cords are flattened at their line ofvcontact by pressure applied by the crowder shoe at right angles to the wind, very regular pores are formed. The amount of pressure applied determines the size of the pores. This pressure is regulated by adjusting the lateral travel of the crowder shoe relative to the speed of rotation of the spindle, core or tube and the diameter of the cord.

Although I have described a preferred embodiment of my winding machine in considerable detail, it will be understood that the description is illustrative, rather than restrictive, as many details may be modied or changed without departing from the spirit or scope of my invention. Accordingly, I do not desire to be restricted to the exact structure described, except as limited by the appended claims.

I claim:

l. In a winding machine for winding a cord around a rotating spindle, a crowder shoe positioned adjacent said spindle, a rod projecting rearwardly from said crowder shoe, a bracket supporting the rear end of said rod, and a spring coiled around said rod between said bracket and said crowder shoe.

2. A WindingA machine for winding a cord around a rotating spindle, said machine comprising a crowder shoe positioned adjacent said spindie, a bracket positioned rearwardly of said crowder shoe, a rod projecting from said crowder shoe and supported at its rear end by said bracket, means on said rod urging said rod forward axially to hold said crowder shoe in contact with said spindle, and a friction Wheel positioned rearwardly of said crowder shoe and adapted to tension the cord being wound on said spindle, said crowder shoe and said friction wheel being movable as a unit laterally relative to said spindle.

3. In a winding machine for winding a cord around a rotatable spindle, a base, a bracket rigidly mounted on said base, a spreader bar mounted adjacent said bracket, a crowder shoe having one edge engaging one end of said spreader bar, a post secured to said base and engaging the opposite edge of said crowder shoe to prevent lateral movement of said crowder shoe relative to said base, pins projecting laterally from said bracket into engagement with the top and bottom of said crowder shoe to hold it against vertical movement and a spring engaging the rear end of said crowder shoe to resiliently urge the forward edge of said crowder shoe into engage- 'ment with said rotatable spindle to properly position the cord being wound on said cylinder.

CARL H. NORDELL.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 249,525 Howard Nov. 15, 1881 665,015 Kennedy Jan. 1, 1901 850,993 Brown Apr. 23, 1907 1,079,417 Kreiter et a1 Nov. 25, 1913 1,799,918 Marsden Apr. 7, 1931 2,139,784 Wengel Dec.' 13, 1938 2,165,411 Peyton July 11, 1939 2,426,631 Mapes Sept. 5, 1947 FOREIGN PATENTS Number Country Date 103,690 Great Britain Feb.A 5, 1917 835,176 France Sept. 19, 1938